To insert and remove a penis and/or any other object from a female vagina repeatedly in a fairy quick fashion over and over as if being "stabbed" with a knife or other sharp object multiple tines in rapid succession.

"Stab me with your cock!"

"She wanted me to stab her so I stuffed my dick up her pussy and quickly removed it and kept doing so until I busted a fat nut up in her cunt and made her pregnant."